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Author Question: In Figure 39-33, what voltage operates the potential relay coil? What will be an ideal ... (Read 52 times)

ap345

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on: Jul 26, 2018
In Figure 39-33, what voltage operates the potential relay coil?
 
  What will be an ideal response?

Question 2

Outline the correct brazing procedure for hard copper refrigeration piping?
 
  What will be an ideal response?


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Kdiggy

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Reply #1 on: Jul 26, 2018
Answer to Question 1

The back emf produced by the start winding across the common and start terminals.

Answer to Question 2

Copper pipe and fittings should be cleaned before assembly
Nitrogen should be trickled through system before, during, and after brazing Plastic and other parts that can be damaged by heat should be protected Joint should be heated evenly using an oxy-acetylene torch
Brazing rod should be applied to the joint away from the flame


ap345

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Reply 2 on: Jul 26, 2018
Gracias!

mjenn52

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Reply 3 on: Yesterday
Excellent

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